LM5010SDX Equivalent & Substitute Parts

Part Overview

The LM5010SDX is a buck switching regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 1A output current with an adjustable output range from 2.5V to 70V, operating from an 8V to 75V input supply. The device is packaged in a 10-WDFN exposed pad configuration suitable for surface mount applications.

The LM5010SDX is classified as obsolete. Equivalent and substitute parts are available from the same manufacturer with improved product status and compliance certifications, making them suitable alternatives for new designs and production requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Function	Step-Down (Buck)
Output Configuration	Positive Adjustable
Number of Outputs	1
Voltage - Input (Min)	8V
Voltage - Input (Max)	75V
Voltage - Output (Min/Fixed)	2.5V
Voltage - Output (Max)	70V
Current - Output	1A
Frequency - Switching	100kHz ~ 1MHz
Synchronous Rectifier	No
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	10-WDFN Exposed Pad
Supplier Device Package	10-WSON (4x4)
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LM5010SDX are determined by equivalence in the following critical parameters:

Functional topology: Buck switching regulator topology
Output configuration: Positive adjustable output
Package type: 10-WDFN exposed pad (10-WSON 4x4)
Output current rating: 1A
Adjustable output voltage range: 2.5V to 70V
Switching frequency range: 100kHz ~ 1MHz
Mounting type: Surface mount

The substitute parts LM5010ASD/NOPB, LM5010ASDX/NOPB, and LM5010SDX/NOPB maintain identical functional specifications and package configurations. Variations exist in input voltage minimum rating, operating temperature range, product status, and RoHS compliance, which are documented in the parameter comparison table below.

Parameter Comparison

Parameter	LM5010SDX	LM5010ASD/NOPB	LM5010ASDX/NOPB	LM5010SDX/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Function	Step-Down	Step-Down	Step-Down	Step-Down
Output Type	Adjustable	Adjustable	Adjustable	Adjustable
Number of Outputs	1	1	1	1
Voltage - Input (Min)	8V	6V	6V	8V
Voltage - Input (Max)	75V	75V	75V	75V
Voltage - Output (Min/Fixed)	2.5V	2.5V	2.5V	2.5V
Voltage - Output (Max)	70V	70V	70V	70V
Current - Output	1A	1A	1A	1A
Frequency - Switching	100kHz ~ 1MHz	100kHz ~ 1MHz	100kHz ~ 1MHz	100kHz ~ 1MHz
Synchronous Rectifier	No	No	No	No
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	10-WDFN Exposed Pad	10-WDFN Exposed Pad	10-WDFN Exposed Pad	10-WDFN Exposed Pad
Supplier Device Package	10-WSON (4x4)	10-WSON (4x4)	10-WSON (4x4)	10-WSON (4x4)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For applications requiring active product status and RoHS3 compliance, LM5010ASD/NOPB, LM5010ASDX/NOPB, and LM5010SDX/NOPB are direct substitutes. All three are actively manufactured and RoHS3 compliant.

For applications with minimum input voltage of 6V, LM5010ASD/NOPB and LM5010ASDX/NOPB support lower input voltage thresholds compared to the original LM5010SDX specification.

For applications requiring extended operating temperature range to 150°C, LM5010ASD/NOPB and LM5010ASDX/NOPB provide superior thermal performance specifications.

For applications matching the original 8V minimum input voltage and 125°C operating temperature, LM5010SDX/NOPB maintains electrical equivalence while providing active product status and RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can LM5010ASD/NOPB replace LM5010SDX in existing designs?

A: Yes. LM5010ASD/NOPB is functionally equivalent in topology, output configuration, current rating, voltage ranges, switching frequency, and package type. The substitute offers improved product status (active vs. obsolete) and RoHS3 compliance. The lower minimum input voltage (6V vs. 8V) and extended operating temperature range (150°C vs. 125°C) represent enhanced specifications.

Q: What is the difference between LM5010ASDX/NOPB and LM5010ASD/NOPB?

A: Both parts are functionally equivalent with identical electrical specifications. The difference lies in packaging format: LM5010ASDX/NOPB is supplied in cut tape and Digi-Reel format, while LM5010ASD/NOPB is also supplied in cut tape and Digi-Reel format. Both maintain the same 10-WSON (4x4) package configuration.

Q: Is LM5010SDX/NOPB a direct replacement for the obsolete LM5010SDX?

A: Yes. LM5010SDX/NOPB maintains identical electrical specifications including 8V minimum input voltage and 125°C operating temperature range. It provides active product status and RoHS3 compliance, making it suitable for production and new designs.

Q: Are all substitute parts pin-compatible with the original LM5010SDX?

A: Yes. All substitute parts use the identical 10-WDFN exposed pad package (10-WSON 4x4) with the same pinout and footprint, ensuring direct PCB compatibility.

Q: What compliance certifications apply to the substitute parts?

A: LM5010ASD/NOPB, LM5010ASDX/NOPB, and LM5010SDX/NOPB are ROHS3 compliant. All parts are REACH unaffected and classified under ECCN EAR99 with HTSUS code 8542.39.0001.

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